package com.sky.service.common.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.common.EmployeeMapper;
import com.sky.pojo.Employee;
import com.sky.result.PageResult;
import com.sky.service.common.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl  implements EmployeeService {

    @Resource
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();//

        //1、根据用户名查询数据库中的数据  select * from employee where username = #{username}
        Employee employee = employeeMapper.getByUsername(username); //

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }
        //3、返回实体对象
        return employee;
    }
/*
新增员工

@param EmployeeDTO
 */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置帐号状态，默认正常状态，1表示正常，0表示锁定
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码，默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //记录当前时间和修改时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //设置记录创建人id和修改人id
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
    }

    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> results = page.getResult();
        return new PageResult(total,results);
    }

    @Override
    public void update(Employee employee) {
        //获取修改时间
        employee.setUpdateTime(LocalDateTime.now());
        //获取当前用户id
        employee.setUpdateUser(BaseContext.getCurrentId());
        //执行修改
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Long id) {
        //根据id查询员工数据
        Employee employee = employeeMapper.getById(id);//
        //密码不返回
        employee.setPassword("*******");
        return employee;
    }

    @Override
    public void startOrStop(Integer status, Long id) {
    employeeMapper.startOrStop(status,id);
    }

    @Override
    public void updatePassword(PasswordEditDTO passwordEditDTO) {
        //获取当前用户id
        Long empId = BaseContext.getCurrentId();
        //根据id查询员工数据
        Employee employee = employeeMapper.getById(empId);
        //密码比对
        String oldpassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        if (!oldpassword.equals(employee.getPassword())){
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }else if (passwordEditDTO.getNewPassword().equals(employee.getPassword())){
            //新旧密码一致
            throw new PasswordErrorException(MessageConstant.PASSWORD_EDIT_FAILED);
        }
        //执行修改
        String newPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes());
        employeeMapper.updatePassword(empId,newPassword);
        //

    }


}
